NYC-WTC_000210953

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling Results for Staten Island Landfill Sampling Date and Time: 10/06/01 0800 to 10/06/01 2000

PCM by NIOSH 7400 TEM (AHERA) Sampling Sampling Sample f/mm’ f/cc Structures (#) S/mm^ S~f/cc* Date Sample No. Location Volume Matrix O.Sp- Su >5u

10/6/2001 02911 #1 708.3 Air <7.0 <0.004 0 0 <8.61 <0.0047 10/6/2001 02912 #2 2115- Air <7.0 <0.004 0 0 <8.61 <0.0047 10/6/2001 02913 #3 710 Air 10.19 0.005 b 0 <8.61 <0.0047 10/6/2001 02914 #4 680.7 Air <7.0 <0.004 0 0 <8.61 <0.0049 10/6/2001 02915 #5 709.5 Air <7.0 <0.004 0 0 <8.61 <0.0047 10/6/2001 02916 #6’ 595 Air <7.0 <0.005 0 0 <7.75 <0.0050 10/6/2001 02917 #7 711 Air <7.0 <0.004 b 0 <8.61 <0.0047 10/6/2001 02918 #8 ■ 720 Air <7.0 <0.004 0 0 <8.61 <0.0046 10/6/2001 02919 ff9A 708 Air <7.0 <0.004 0 0 <8.61 <0.0047 10/6/2001 02920 600’ Air <7.0 <0.004 0 8.61 0.0055 10/6/2001 02921 #9C 698.7’ Air <7.0 <0.004 0 6.61 0,0047 10/6/2001 02922 #10 708 Air <7.0 <0.004 0 0 <8.61 <0.0047 COC# 04602 ** Chrysotile

NS: Not sampled Sample volume is below recommended limit of the method: ■Structure (SJ roughly equivalent to fiber (f) NA; not analyzed due to overloading of particulates

NIOSH 7400: Fiber Analysis of Air samples via NIOSH 7400, Revision 3, Issue 2, 8/15/94 Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) ERA 40CFR Part 763 (AHERA) Standard criteria; EPA 40CFR Part 763 (AHERA): 0.01 fiber/cc (PCM), 70 S/mm^ volume 1200 L, for 25 mm filter (TEM)

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NYC-WTC_000210954